Inter Project Billing process not creating Payable invoice during the Tie-back

1. Created relationship at the customer level at Provider project. Customer is linked to Receiver Project owing Org/OU

2. Created expenditure against provide project ( contract). Cost Distributed, created event and accounting ran

3. Generated Revenue and Invoice

4. Released Revenue and Invoice

5. Interfaced the Project Invoice to Receivables, Invoice appeared in AR

6. From the Provider project OU ran the Tie back process

7. Ran payable import with source as "Inter Project invoice"

8. In the Invoice review form, Receivable status shows " Accepted" AP status shows "Accepted"

However Invoice is not getting created and visible in Payable invoice workbench.

Can you please guide if I am missing anything /steps and how to get the AP invoice created into the Receiver's OU.